Double-glazed metal sash



April 8, 1952 IR. R. CAMERON 2,591,780

DOUBLEGLAZED METAL SASH Filed Jan. 31, 1949 112;; INVENTOR.

201952 72 Gamma/v Patented Apr. 8, 1952 UNITED STATES PATENT OFFICE DOUBLE-GLAZED METAL SASH Robert R. Cameron, Denver, 0010. Application January 31, 1949, Serial No. 73,737

This invention relates to a metal window sash, and more particularly to metal sash members for forming metal window sash.

The principal object of the invention is to provide a metal sash member from which double glazed metal sash can be quickly and easily formed in any of the varieties and forms for which metal window sash are used.

A further object of the invention is to pro vide a. metal sash member with means whereby two spaced-apart panes of glass can be easily applied or removed.

- Other objects and advantages reside in the de- 1 Claim.

tail construction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from. the following description.

Inthe following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Figs. 1, 2, and 3 are fragmentary, perspective views, illustrating the three component members from which the improved double glazed metal sash are formed;

Fig. 4. is a cross-section through a stationary double glazed window, illustrating the use of the improved sash members; and

Fig. is a similar cross-section through, a hinged sash panel constructed from the improved sash members.

All of the various conventional types of sash can be formed from various arrangements and combinations of the three simple members illustrated in Figs. 1, 2, and 3.

In Fig. 1 a sash frame bar is illustrated at H! having a greater width than thickness and provided with an edge flange I I extending outwardly along one edge thereof to form a rectangular cross-section. A relatively narrow, glasssupporting flange I2 extends along the latter edge from the opposite side of the member III. A second relatively wide glass flange I3 extends along the latter side of the member II! at the opposite edge thereof. The first glass flange I2 is inset from one face of the bar to provide an indented, glass-receiving channel I4. The edge of the second glass flange I3 is notched to provide a second glass-receiving channel I5. The second flange l3 projects further from the bar It than the first flange I2 so as to offset the two glass channels I4 and I5 from each other.

Screw holes [6 are positioned in spaced-apart relation along'and adjacent to both glass channels I4 and I5. The latter holes are for receiving molding screws H, by means of which a semiresilient, longitudinally-bowed glass molding strip IB may be attached to the bar ID. The molding strip I8 is formed from an elongated strip of resilient metal arched in cross-section,

. as shown in Fig. 2, and provided with screw openings I9 corresponding in spacing to the screw openings I6.

To form a plain sash, the bar I0 is miter-cut to surround the perimeter of the desired sash and welded or otherwise joined at the corners thereof. An outer glass paneZI (see Fig. 5) is placed in the outer peripheral glass channel I4. A slightly smaller inner glass pane 20 is placed in the inner glass channel I5. The two panes 2B and ZI are secured in place by attaching strips of the molding strip I8 around the periphery of each pane by means of the screws IT, as illustrated.

It can be readily seen that the above construction forms an enclosed air space between the two glass panes to serve as insulation. It is usually not desirable to have this air space completely closed, due to barometric changes which would create alternate pressure and partial vacuum between the two panes. To relieve this,

' small air openings 22 are formed through the member ID to communicate with the outside atmosphere. For fixed sash, the peripheral flange I I is imbedded in the window frame or masonry, indicated at 23, Fig. 4.

For a sash requiring division bars or muntins dividing the glass area into a plurality of panes, a muntin bar 24, as shown in Fig. 3, is used. The bar 23 has a pair of projecting ridges 25 along both of its side faces. The ridges 25 are spaced from, and parallel to, the side edges of the bar so as to form four glass grooves 26. The bar 25 is also provided with screw holes 21 for receiving the molding screws FL The bars are welded into the frame formed by the bar [0, and the glass panes 20 and ZI rest in the glass grooves 26, where they are secured by means of the molding an?) I8, which overlaps both panes, as shown in Fig. 4.

To insert a hinged panel in a sash, the frame bars In of the hinged panel are faced to place the edge flanges I I on the outside, and the frame bars I0 of the fixed sash are faced to place the edge flanges II on the inside, so that the two adjacent bars It will overlap each other, as shown in Fig. 5, to form two sealing contacts 28. The frame of the hinged panel is hinged to the frame of the fixed sash by means of any of the standard hinges 29.

While the invention has been described as made from metal and as applying more particularly to metal sash, it is to be understood that the advantages are not dependent upon the material from which it is made, as it would be equally valuable formed from plastic, wood, or other materials.

While a specific form of the improvement has been described-and illustrated herein, it is to be understood that the same may be varied, within the scope of the appended claim, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

A sash bar for supporting two glass panes inparallel relation comprising: a sash bar adapted to extend along the edges of both panes, the

width of said sash being positioned at right angles to the planes of saidpanes, said width being equal to the distance between the outer faces of the two planes; an edge flange extendingou'tward along the first edgeof said bar at right angles to the width thereof and with the latter edge; a first, relatively thin, glass-supporting flange extending inward from said -bar opposite said edge flange, said first-glass supporting flange being spaced from the first edgeof said bar a distance equal to the thickness of the first glass pane so that the outer surface of said latter pane will align with both said first edge and with thesurface of saidedge flange; asecond, relatively thick, glassasupporting flange extending inwardly from said :bar along the second edge thereof parallel to said first glass-supporting flange and flush with the second edge of said bar, there being a 4 rectangular groove along the inner edge of said second glass-supporting flange for receiving the edge of the second glass pane, said groove having a depth equal to the thickness of said second pane so that the surface of the latter will align with said second edge and with the surface of said second glass-supporting flange; a first molding strip; screws threaded into the first edge of said bar and acting to secure said first molding strip to the surface of said edge flange in overlapping relation with the first glass pane; a second molding strip; and screws threaded into said second glass-supporting flange and acting to secure said second molding strip against said latter flange and in overlapping relation with the second glass pane.

ROBERT R. CAMERON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PA'I'ENTS Number Name Date 625,398 Johnson May 23, 1899 1,282,710 Paeth i Oct. 22, 1918 1,347,706 Motteau July '27, 1920 1,927,033 Herron Sept. 19, 1933 1,934,546 Lewerentz Nov. 7, 1933 2,015,789 Fox et al. 1 oct. 1,1935 2,157,162 Colleran May 9, 1939 2,185,626 Chaffee Jan. 2, 1940 2,193,852 Axe Mar. 19, 1940 I FOREIGN PATENTS Number Country Date 7 77,588 Sweden Oct. 10. 1930 

